Feature: 1. [Nut Bolt Screw Gauge] Quickly categorize bolts and nuts in a simple way, saving time to find the right size for your project. With a wall hanging hole for easy storing in your workshop or garage. 2. [Integrated Design] This nut and bolt size gauge features holes for measuring bolts, pins for both imperial and metric nuts, embossed thread profiles for identifying pitches. 3. [Sturdy Construction] This bolt gauge is made of heavy duty reinforced plastic, with about 5/32 inch thickness, sturdy and not easily cracked or broken, ensuring durability. 4. [Clear and Accurate Marking] The bolt sizer features clear and easy to read markings for quick measurement, smoothly without burrs, will not injury your hands. 5. [Compact and Lightweight] Bolt and nut gauge takes up minimal space, fits easily in most portable toolboxes and can be mounted on workbench or wall for easy access. Specification: Item Type: Nut Bolt Screw Gauge Material: Plastic Features: Smoothly without burr, high accuracy, high hardness, stable performance, sturdy texture Imperial Size: Including 4, 5, 6, 8, 10, 1/4, 5/16, 3/8, 7/16, 1/2, 9/16, 5/8, 3/4 Metric Size: Including M3, M4, M5, M6, M7, M8, M10, M12, M14, M16, M18, M20, M22 Nut Size: 6, 8, 10, 1/2, 1/4, 3/8, 5/8, 5/16, 7/16, 9/16 Size (LxW): Approx. 22.1x8.4cm / 8.7x3.3in Thickness: Approx. 0.4cm / 5/32in. Package List: 1 x Nut Bolt Screw Gauge